Electric-railway motor



(No Model.) 2 Sheets-Sheet 2.

0. J. VAN DEPOELE. ELECTRIC RAILWAY MOTOR.

No. 424,911. C4, Patented Apr. 1, 1890.

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UNITED STATES PATENT OFFICE.

CHARLES J. VAN DEPOELE, OF LYNN, MASSACHUSETTS.

ELECTRIC- RAILWAY MOTOR.

SPECTCFICATION forming part of Letters Patent No. 424,911, dated April1, 1890.

Application filed October 25, 1889. Serial No. 328,115. (No model.) I

To all whom it may concern;

Be it known that I, CHARLES J. VAN DE- POELE, a citizen of the UnitedStates, residing at Lynn, in the county of Essex and State ofMassachusetts, have invented certain new and useful Improvements inElectric-Railway the class largely used for propelling electricrailwayvehicles.

The general characteristics of the type of motor to which my inventionparticularly relates comprise a self-contained machine, which is sleevedat its rear or yoke end upon the axle to be driven and flexiblysupported at its front end, so as to have radial movement with respectto its rear support. The armature-shaft is connected by gearing with thesaid axle to be driven, and is desirably geared down to such an extentthat the employment of a countershaft and gearing becomes necessary.WVhen the counter-shaft is omitted, the matter is simplified and therear end of the motor can be mounted directly upon the axle to bedriven, said axle being provided with a gear-wheel large enough toextend into engagement with a pinion upon the armature-shaft. isnecessary, additional supports must be provided, and these have, up tothe present time, as far as I am aware, always been formed in side armssecured to the magnetic yoke of the machine. Necessarily a machine soconstructed comprises a large number of parts and means for securingthem together,

each and all of which, aside from the expense of manufacturing, areliable to become loose and inoperative in use. By my present improvementthese ob; ectionable features are entirely eliminated, which object isattained by forming the magnetic yoke, the side arms, and theaxle-bearings all in a single integral piece, which would almost withoutexception be formed by casting, although it might be otherwise produced,if desired. The motorframe so constructed should be of soft iron, andmay be annealed, if desired, in order to avoid brittleness and liabilityto destruction.

The details of construction and arrange- IVhere, however, acounter-shaftment will be hereinafter set forth, and referred to in theappended claims.

In the drawings, Figure 1 is a plan view of an electro-dynamie motorembodying my invention. Fig. 2 is a side elevation thereof, the gearingbeing indicated in dotted lines. Fig. 3 is an end view in which thefield-magnet coils are shown in dotted lines. Figs. 1 and 5 are plan andend views, respectively, of my motor-frame without the field-magnetcoils.

In said drawings, A represents the axle to be driven, usually providedat its extremities with the carrying-wheels of a vehicle. B B indicatebearings sleeved upon said axle, said bearings being integral with partsor arms I) 11 extending radially therefrom. The arms 1) Z) sustain at ornear their outer extremities the ends of the shaft of the armatureO,being also, a driving-gear G, which engages and is driven by a pinion9 upon the armatureshaft. The motor-frame comprises the side arms I) b,as stated, said arms being formed at their rear extremities intobearings resting upon the axle A. Said bearings are re movable andengage only a part of said axle, substantially as indicated in Fig. 2,being cured in position by removable caps B B whiclntogether with theparts of the bearing integral with the m.otor-frame, should be providedwith suitable anti-friction lining. The side arms I) l) are connected bya transverse rear portion or yoke II, with which they are integral.

The motor-frame is preferably composed of soft cast-iron, and isspecially designedto sustain the rear ends of the field-magnet cores andto form the magnetic yoke therefor.

I J indicate the field-magnet coils, through which extend the ironcores, one of which dis seen in Fig.1. The cores of the field-magnets IJ are secured to and magnetically united by the yokell. Obviously thesaid cores maybe connected to the yoke II in differentpositions, asendwise, as seen in Figs. d and 5; or they may be let into recessesformed therein, substantially as indicated in Figs. 1, 2, and henarranged as shown in said Figs. 1, 2, and 3, the rear ends of thefield-magnet cores '5 j are let into oppositely-placed recesses in theyoke II and secured thereto by bolts 71 which, for convenience ofmanufacture, may, if desired, pass entirely through said cores and theintervening portion of the yoke. \Vith this construction the motor-framewill possess great strength and rigidity, and, moreover, since both sidearms are connected in permanent relative positions a single set ofboring tools may be employed for positioning the bearings therein,thereby insuring greater exactness and permanency. If considereddesirable, the yoke H may be re-enforced at the part extending betweenthe cores of the fieldmagnets, either to add structural strength wherethe same is recessed to receive the cores, as here shown, or to includestill greater magnetic conductivity.

Various modifications of the struetu re herein shown may be madeconsistent with the foregoing description, which includes as itsprincipal features the frame of a geared motor formed in one integralpiece. Just how the field-magnet cores are attached to that frame is ofminor importance, as is also the character of the bearings employed forthe diflierent moving parts.

In Figs. 1, 2, and 3 the field-magnet cores are seen as letintorecessesin the yoke II. In Figs. 4 and 5 the yoke is not formed withrecesses and the field-magnet cores are buttended thereto, being securedby screw-bolts O,which pass transversely through the yokes H and enterthe field-magnet cores longitudinally.

The field-magnet cores are seen in Figs. 4-

and .5 without the magnetizing-coils indicated in the other figures.

Having described my invention, what I claim, and desire to secure byLetters Patent, 1s

1. A frame for an electric motor, comprising side arms and a magneticyoke uniting the same, the arms and yoke being integral with each otherand formed of magnetic material, and field-magnet cores remov-ablysecured to and magnetically united by said yoke.

2. A motor-frame comprising side arms having bearings at one of theirends, whereby the same are sleeved upon the axle to be driven, bearingsat the opposite ends for the armature-shaft, a magnetic yoke connectingsaid arms and integral therewith, and field-magnet cores removablysecured to and magnetically united by said yoke.

3. A motoratrame comprising side arms having bearings at one of theirends, whereby the same are sleeved upon the axle to be driven, bearingsat the opposite ends of the armature-shaft, intermediate bearings for acounter-shaft, and a magnetic yoke connecting said arms and integraltherewith, and field-mag net cores removabl y secured to andmagnetically united by said yoke.

4. A motor-frame comprising side arms having at their outer endsbearings for the armature-shaft, a magnetic yoke uniting their rear endsand formed integral therewith, and downwardly-opening bearings at saidrear ends for sustaining the motor-frame in a radially-11lovableposition upon the axle to be driven.

In testimony whereof I hereto af'lix my signature in presence of twowitnesses.

CHARLES J. VAN DEPOELE.

\Vitnesses:

J. WEsLEY GIBBoNEY, FRANKLAND JANNUS.

